[mptcp-next,v12,23/28] mptcp: add check_id for lookup_anno_list_by_saddr

Commit Message

Geliang Tang Nov. 21, 2023, 9:52 a.m. UTC

Add a new parameter check_id for mptcp_lookup_anno_list_by_saddr(), and
pass it to mptcp_addresses_equal(). Then in mptcp_pm_del_add_timer(),
the input parameter check_id can be passed as the new parameter into
mptcp_lookup_anno_list_by_saddr(). After this, this condition:

        (!check_id || entry->addr.id == addr->id)

can be dropped, only test if 'entry' is NULL is enough.

Signed-off-by: Geliang Tang <[e-mail]>
---
 net/mptcp/pm.c         |  2 +-
 net/mptcp/pm_netlink.c | 13 +++++++------
 net/mptcp/protocol.h   |  3 ++-
 3 files changed, 10 insertions(+), 8 deletions(-)

Patch

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 77a0e859076c..d5ae2e775059 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -259,7 +259,7 @@  void mptcp_pm_add_addr_echoed(struct mptcp_sock *msk,
 
 	spin_lock_bh(&pm->lock);
 
-	if (mptcp_lookup_anno_list_by_saddr(msk, addr) && READ_ONCE(pm->work_pending))
+	if (mptcp_lookup_anno_list_by_saddr(msk, addr, false) && READ_ONCE(pm->work_pending))
 		mptcp_pm_schedule_work(msk, MPTCP_PM_SUBFLOW_ESTABLISHED);
 
 	spin_unlock_bh(&pm->lock);
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 6ad8bb2f32e9..c141ac8ba1ef 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -203,14 +203,15 @@  bool mptcp_pm_nl_check_work_pending(struct mptcp_sock *msk)
 
 struct mptcp_pm_add_entry *
 mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock *msk,
-				const struct mptcp_addr_info *addr)
+				const struct mptcp_addr_info *addr,
+				bool check_id)
 {
 	struct mptcp_pm_add_entry *entry;
 
 	lockdep_assert_held(&msk->pm.lock);
 
 	list_for_each_entry(entry, &msk->pm.anno_list, list) {
-		if (mptcp_addresses_equal(&entry->addr, addr, true, false))
+		if (mptcp_addresses_equal(&entry->addr, addr, true, check_id))
 			return entry;
 	}
 
@@ -290,12 +291,12 @@  mptcp_pm_del_add_timer(struct mptcp_sock *msk,
 	struct sock *sk = (struct sock *)msk;
 
 	spin_lock_bh(&msk->pm.lock);
-	entry = mptcp_lookup_anno_list_by_saddr(msk, addr);
-	if (entry && (!check_id || entry->addr.id == addr->id))
+	entry = mptcp_lookup_anno_list_by_saddr(msk, addr, check_id);
+	if (entry)
 		entry->retrans_times = ADD_ADDR_RETRANS_MAX;
 	spin_unlock_bh(&msk->pm.lock);
 
-	if (entry && (!check_id || entry->addr.id == addr->id))
+	if (entry)
 		sk_stop_timer_sync(sk, &entry->add_timer);
 
 	return entry;
@@ -310,7 +311,7 @@  bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
 
 	lockdep_assert_held(&msk->pm.lock);
 
-	add_entry = mptcp_lookup_anno_list_by_saddr(msk, addr);
+	add_entry = mptcp_lookup_anno_list_by_saddr(msk, addr, false);
 
 	if (add_entry) {
 		if (mptcp_pm_is_kernel(msk))
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index d132a8d91d10..d40e29419c04 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -920,7 +920,8 @@  mptcp_pm_del_add_timer(struct mptcp_sock *msk,
 		       const struct mptcp_addr_info *addr, bool check_id);
 struct mptcp_pm_add_entry *
 mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock *msk,
-				const struct mptcp_addr_info *addr);
+				const struct mptcp_addr_info *addr,
+				bool check_id);
 int mptcp_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk,
 					 unsigned int id,
 					 u8 *flags, int *ifindex);